Usage:
Little Copper Member of Copper Basin Formation (ID*)
Little Copper Formation of Copper Basin Group (ID)
Geologic age:
Early Mississippian (Kinderhookian)*
Type section, locality, area and/or origin of name:
Type section (= basal part of Copper Basin Group type section): 150 m up flank of ridge above Little Copper Creek (tributary of Copper Creek, which joins Muldoon Creek at Muldoon), in SW/4 NE/4 SE/4 sec. 22 and continues N. 45 deg. E. to center NE/4 NW/4 sec. 23, T. 4 N., R. 21 E., Pioneer Mountains, Blaine Co., ID (Paull and Gruber, 1977).
Reference section: in SW/4 sec. 12, T. 3 N., R. 21 E., Blaine Co., ID (Paull and Gruber, 1977).
AAPG geologic province:
Idaho Mountains province*
Snake River basin*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).